Giles Greenfield is the illustrator who created the cover art for the Bloomsbury Edition of Harry Potter and the Goblet of Fire. He was supposed to create the cover art for Harry Potter and the Order of the Phoenix, but didn’t finish it due to his daughter being diagnosed with a terminal genetic illness.
Anyway, Giles Greenfield keep writing and illustrating. Giles has hand drawn a watercolour directly into the book on the dedication page for a private collector. With you, the drawing of Harry Potter and Dobby in the Hogwarts Kitchen: